Polishing and spraying process for glass bottles: the craftsmanship of creating the beauty of glass
Time：
2025-09-29
Polishing and spraying process for glass bottles: the craftsmanship of creating the beauty of glass
In the glass products industry, the polishing and spraying process of glass bottles is a key link in improving product texture and added value. It transforms ordinary glass bottles into practical and ornamental masterpieces, widely used in cosmetics, food, medicine and other fields.
The polishing process is the first step in revitalizing glass bottles. The surface of newly formed glass bottles is prone to scratches, roughness, and other defects, which need to be improved by polishing. Physical polishing commonly uses wool wheels combined with polishing paste to remove surface impurities and fine scratches through high-speed mechanical rotation and friction, resulting in a delicate and glossy bottle body; Chemical polishing uses acidic or alkaline solutions to undergo chemical reactions with glass surface substances, dissolve defects, and make the surface smoother. The polished glass bottle has enhanced transparency and a smooth touch, laying a good foundation for subsequent spraying.
The spraying process endows glass bottles with rich colors and protective properties. Before spraying, the bottle body should be thoroughly cleaned to remove oil stains and dust, in order to avoid affecting the adhesion of the coating. Next, perform a base treatment by applying primer to enhance the adhesion between the coating and the glass. Electrostatic spraying technology is commonly used in the spraying process, which atomizes the coating and evenly adheres to the bottle body. There are various types of coatings, and water-based coatings are environmentally friendly and non-toxic, suitable for food and pharmaceutical packaging; Oil based coatings have full colors and are commonly used in cosmetic packaging. After spraying, it needs to be baked in a curing oven to solidify the coating and form a hard protective film, which not only makes the color of the glass bottle last, but also prevents scratches and corrosion.
Nowadays, with the increasing demand of consumers for product appearance, the polishing and spraying process of glass bottles is constantly innovating. The research and development of environmentally friendly coatings and the application of automated spraying equipment have not only improved production efficiency but also reduced environmental pollution. This craftsmanship uses ingenuity to carve details, making the glass bottle a visual carrier for conveying brand style while carrying items.
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